Nixie Tube Clock Advanced Version w/o Tubes Clear Acrylic Fits for QS30-1 SZ1-1 SZ3-1 SZ-8 Tubes Features: - Fits for tubes, including QS30-1, SZ-8, SZ3-1, ZM1020, Z560M. - 5V power supply via Micro USB. Low power consumption only 2W. It supports for Android smartphones 5V 1A or 2A charger. - Four buttons. This advanced version comes with a remote control and LED backlight function. - DS3231M real-time clock and builtin crystal oscillator ensures accurate timing. With backup electricity, it can keep running when it is powered off. - Compact size 14.5 x 4cm. - With timer to turn it on/off. Electrical Characteristics: - Input Voltage: Minimum: 3.3V; Typical: 5V; Maximum: 5.5V - Working Current@Input Voltage 5V: around 430mA - Positive Voltage for Tube: 170V - Power Consumption@Input Voltage 5V: around 2.15W Package Included: - 1 x Nixie Tube Clock - 1 x Remote Control Note: - Tubes in the pictures are not included. - When it doese not display numbers completely, it is mainly due to poor quality power supply. Please replace it with quality power supply. Once premium power supply in place, it cannot display numbers completely, it is time to repleace your tubes.